Paul Halpern Books

Cosmic Wormholes: 2The Search for Interstellar Shortcuts

By Paul Halpern

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Liability rules and insurance markets

By Paul J. Halpern

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"A professor of physics and prolific author, Halpern shows how prediction - as we think of it now - emerged during the birth of modern science in the seventeenth and eighteenth centuries. As scient...

Countdown to Apocalypse

By Paul Halpern

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The Cyclical Serpent

By Paul Halpern

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The Quest for Alien Planets

By Paul Halpern

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.